Tests confirmed Kirk Hinrich suffered a concussion during the fourth quarter of Friday night’s exhibition victory over the Pacers. The Bulls’ guard will be sidelined indefinitely.

“He’ll have to go through a series of tests make sure he’s OK” coach Tom Thibodeau said. “He said he was feeling a lot better (Saturday).”

Hinrich suffered the injury when he smashed into teammate Erik Murphy on a drive and his head made contact with Murphy and the floor. He exited during the ensuing timeout and retreated to the locker room then left the United Center before game’s end.The NBA instituted protocol for concussions that involve the player passing a variety of tests before being allowed to resume activity. Mike Dunleavy recently passed those tests without missing game action after running into teammate Dexter Pittman during a practice.

Closing time: After logging a exhibition-high 31 minutes 26 seconds against the Pacers including his first fourth-quarter action Derrick Rose was asked if he could handle playing 40 regular-season minutes.